Steam-trap



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' wall 2, perforated on two sides, but having not permit the escape of any steam; and it UNITED STATES PATENT OEEICE.

FRITZ KNACKSTEDT, OF CHICAGO, ILLINOIS'.

STEAM- TRAP.

SPECIFICATION forming part of Letters Patent N O. 622,925, dated April 1 1, 1899.

Application filed Jun'e 22, 1898.

To @ZZ whom t may concern.-

Be it known that I, FRITZ KNACKSTEDT, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented certain new and Vuseful Improvements in Steam-Traps and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention relates to a novel construction in a steam-trap, the object being to provide a device of this description which will automatically drain itself of water, but will consists in the features of construction and combinations of parts hereinafter fully de scribed and claimed. v

Inthe accompanying drawings, illustrating my invention, Figure 1 is a top plan view ofV a steam-trap constructed in accordance with my invention, the cover being removed. Fig. 2 is a vertical longitudinal section of same on the line 2 2 of Fig. 1'. Fig. 3 is a fragmentary detail sectional view on the line 3 3 of Fig. 1.

The most essential feature of my invention consists in providing means for causing the water to rise in the trap to a certain height and then overflowing into a float, which consequently sinks and thereby uncovers the drainpipe through which the water is forced, and as the water is drained from said iioat causing the latter to rise slowly until the drainpipe is again covered, this position being reached when said iioat has been almost entirely drained.

Other features of my invention consist in the detailed construction and arrangement of parts whereby'the operation is accomplished.

Referring now to said drawings, A indicates a casing or trap having an inlet B and a perforated chamber C, adapted to receive and The said'chamber C has an inner partition 1, perforated on all sides, and an outer partition or an unbroken wall opposite the inlet. A oat D is pivotally mounted within said casing A at the lower ends of two rods 3, carrying 'collars 4 at their upper ends, which are pivotally mounted between bifurcated lugs 5 on awall Serial No. 684,199. (No model.)

of said casing A. In this manner said float D is permitted a compound pivotal movement. A drain-pipe 6 enters said casing A adjacent its upper end and is provided with a downwardly-extending branch 7, projecting into said casing and terminating in a small downward extension 8 of said ioat C and below the bottom thereof. Said casing A is provided with an extension 9 to receive said extension 8 of said iioat. Saidbranch 7 of said drainpipe 6 lits telescopically into a tube or cylinder 10, pivoted universally in said extension 8 of said float, as indicated at 11. Said cylinder 10 is perforated adjacent its lower end and is provided interiorly with a socket-piece 12,

adapted to receive and close a conical nipple fitted into said branch 7 at its' lower end. Saidpipe 6 carries a bifurcated arm 13, which extends over said iioat and is connected there with by means of a rod 14, passing through a collar 15 on said arm 13 and pivoted at its lower end to a lug on the bottom of said iioat. Said rod 14 carries a lock-nut 16 at its upper end, which is adapted to engage said collar 15 to limit the downward movement of said iioat. A valve-casing 17 is mounted within said iloat, passing through the bottom thereof, and is secured thereto in any suitable manner. A valve-seat 1S is formed in said valve casing 17 above the bottom of said float, and above said valve-seat said casing 17 is enlarged and perforated. A valve 19, adapted to tit said valve-seat 1S, is mounted upon the lower end of a rod 20, passing through a collar 21 on said arm 13, and which is adjusted so as to cause said valve 19 to t said valveseat 18 to close said valve at the same time that said branch 7 of said drain-pipe 6 is closed by means of the nuts 22 and 23, which are so placed as to allow said rod 20 slight play. The said valve 19 and rod 20 limit the upward movement of said float C. Arms 24, engaging said rod 14, serve to guide said iioat in its movements. At the outlet end of said drain-pipe 6 a piston-valve 25 is mounted, which is provided with a plunger or piston 26, mounted upon a spring-actuated piston# rod 27 and closely fitting the cylindrical passage 28. The outlet-opening 29 of said valve is located adjacent its rear end, so that before any water can pass through said valve said piston 26 must pass and uncover said IOO . ont to any desired vessel.

opening 29. Thus said piston is caused to move sufficiently to operate a register 30, which is connected with the rod 27 and is adapted to register the number of times said trap was drained. V

The operation of my device is as follows: As said casing A gradually fills with water the float C rises before the water reaches the klevel of the perforations inthe valve-casing 17 until the valve-seat 1S is closed by means of the valve 19 and the branch 7 is closed by the socket-piece 12. The float then stops and the water continues to rise around same until it overflows into said float, which then drops, thus permitting water to enter from the bottom through said valve-casing 17 and the perforations therein, and also uncovering the branch 7. The water is -then forced by the steam-pressure through the perforation in cylinder' 10 and into said drain-pipe to the valve 25, which it opens, and thencepasses The casing is thus drained until the water therein is reduced to the level of. the perforations in the valve-casing 17, but the float continues to drain and grad uall y rises as it is drained until the valveseat 1S again comes into contact with and is closed by the valve 19 and the socket-piece 12 simultaneously closes the branch 7. Drain? yage then ceases until the water in casing A again overflows into said float C.' A practically given quantity of water is thus drained from said trap at intervals and each such quantity is registered by the register 30.

I claim as my invention- 1.. In a steam-trap, a casing having an inlet, a oat pivotally mounted within said casing, an outlet-pipe communicating with the interior of said oat, devices carried by said ioat for closing said outlet-pipe as said float rises, a valve in said lioat establishing communication between theV same and said casing below the upper end'of said float, and means-for closing said valve as said iioat rises to prevent entrance of water into said oat before the water in said casing overfiows into said float, substantially as described.

2. In a steam-trap, a casing having an inlet, a float in said casing open at its upper end and provided with an extension below its bottom, an outlet-pipe projecting into said Iioat and terminating in said extension thereof below its bottom, devices carried by said float for closing said outlet-pipe as said float rises, devices for establishing communication between said float and said casing below the upper end of said float, and devices for inter rupting said communication before the water in said casing reaches the said point of communication, whereby said water will be compelled to rise until it overflows into said float, substantially as described.

3. In a steam-trap, a casing having an inlet and an outlet, devices within said casing for controlling said outlet, a piston-valve interposed in said outlet and adapted to be operated by the low of water from said casing, and a register adapted to be operated by said Valve, substantially as described.

4t. In a steam-trap, a casing having an inlet, a iioat pivotally mounted within said casing at the low-er ends of rods pivoted at their upper ends to lugs on said casing, a cylinder pivotally mounted in said float by means of a universal joint, an outlet-pipe projecting into said float and fittin g telescopically within said cylinder, perforations adjacent the lower end of said cylinder, a device in the lower end of said cylinder adapted to lit against and close said outlet-pipe as said float rises, a valve-casing in said float establishing coinmunication between the latter and the casing below the upper end of said float, an arm mounted on the casing and projecting over said float, a rod on said arm, a valve carried on said rod and adapted to control said communication and interrupt it as said float rises, a rod pivotally connected with said oat and movably connected with said arm for limiting the downward movement of said float, a valve interposed in said outlet-pipe,and connection between said valve and aregister adapted to be operated thereby, substantially as described., l

In testimony whereof I afliX my signature in presence of two witnesses.

`FRITZ KNACKSTEDT.

Witnesses:

RUDOLPH WM. Lo'rz, W. F. KNACKSTEDT. 

